Create ST7789_320x240.ini (#24868)

Add ST7789 Display 2" with 320x240 Resolution

tasmota/displaydesc/ST7789_320x240.ini

@@ -0,0 +1,21 @@
+:H,ST7789,320,240,16,SPI,1,*,*,*,*,*,*,*,40
+:S,2,1,1,0,80,30
+:I
+01,A0
+11,A0
+3A,81,55
+36,81,00
+21,80
+13,80
+29,A0
+:o,28
+:O,29
+:A,2A,2B,2C
+:R,36
+:0,A0,00,00,01
+:1,00,00,00,02
+:2,60,00,00,03
+:3,C0,00,00,00
+:i,21,20
+:D,50
+#